1 files changed, 264 insertions, 0 deletions
diff --git a/chromium/ash/display/display_info.cc b/chromium/ash/display/display_info.cc
new file mode 100644
index 00000000000..01c604f7a62
--- /dev/null
+++ b/chromium/ash/display/display_info.cc
@@ -0,0 +1,264 @@
+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <stdio.h>
+#include <string>
+#include <vector>
+
+#include "ash/display/display_info.h"
+#include "base/logging.h"
+#include "base/strings/string_number_conversions.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
+#include "ui/gfx/display.h"
+#include "ui/gfx/size_conversions.h"
+#include "ui/gfx/size_f.h"
+
+#if defined(OS_WIN)
+#include "ui/aura/window_tree_host.h"
+#endif
+
+namespace ash {
+namespace internal {
+
+Resolution::Resolution(const gfx::Size& size, bool interlaced)
+    : size(size),
+      interlaced(interlaced) {
+}
+
+// satic
+DisplayInfo DisplayInfo::CreateFromSpec(const std::string& spec) {
+  return CreateFromSpecWithID(spec, gfx::Display::kInvalidDisplayID);
+}
+
+// static
+DisplayInfo DisplayInfo::CreateFromSpecWithID(const std::string& spec,
+                                              int64 id) {
+  // Default bounds for a display.
+  const int kDefaultHostWindowX = 200;
+  const int kDefaultHostWindowY = 200;
+  const int kDefaultHostWindowWidth = 1366;
+  const int kDefaultHostWindowHeight = 768;
+
+  // Use larger than max int to catch overflow early.
+  static int64 synthesized_display_id = 2200000000LL;
+
+#if defined(OS_WIN)
+  gfx::Rect bounds_in_native(aura::RootWindowHost::GetNativeScreenSize());
+#else
+  gfx::Rect bounds_in_native(kDefaultHostWindowX, kDefaultHostWindowY,
+                             kDefaultHostWindowWidth, kDefaultHostWindowHeight);
+#endif
+  std::string main_spec = spec;
+
+  float ui_scale = 1.0f;
+  std::vector<std::string> parts;
+  if (Tokenize(main_spec, "@", &parts) == 2) {
+    double scale_in_double = 0;
+    if (base::StringToDouble(parts[1], &scale_in_double))
+      ui_scale = scale_in_double;
+    main_spec = parts[0];
+  }
+
+  size_t count = Tokenize(main_spec, "/", &parts);
+  gfx::Display::Rotation rotation(gfx::Display::ROTATE_0);
+  bool has_overscan = false;
+  if (count) {
+    main_spec = parts[0];
+    if (count >= 2) {
+      std::string options = parts[1];
+      for (size_t i = 0; i < options.size(); ++i) {
+        char c = options[i];
+        switch (c) {
+          case 'o':
+            has_overscan = true;
+            break;
+          case 'r':  // rotate 90 degrees to 'right'.
+            rotation = gfx::Display::ROTATE_90;
+            break;
+          case 'u':  // 180 degrees, 'u'pside-down.
+            rotation = gfx::Display::ROTATE_180;
+            break;
+          case 'l':  // rotate 90 degrees to 'left'.
+            rotation = gfx::Display::ROTATE_270;
+            break;
+        }
+      }
+    }
+  }
+
+  int x = 0, y = 0, width, height;
+  float device_scale_factor = 1.0f;
+  if (sscanf(main_spec.c_str(), "%dx%d*%f",
+             &width, &height, &device_scale_factor) >= 2 ||
+      sscanf(main_spec.c_str(), "%d+%d-%dx%d*%f", &x, &y, &width, &height,
+             &device_scale_factor) >= 4) {
+    bounds_in_native.SetRect(x, y, width, height);
+  }
+
+  std::vector<Resolution> resolutions;
+  if (Tokenize(main_spec, "#", &parts) == 2) {
+    main_spec = parts[0];
+    std::string resolution_list = parts[1];
+    count = Tokenize(resolution_list, "|", &parts);
+    for (size_t i = 0; i < count; ++i) {
+      std::string resolution = parts[i];
+      int width, height;
+      if (sscanf(resolution.c_str(), "%dx%d", &width, &height) == 2)
+        resolutions.push_back(Resolution(gfx::Size(width, height), false));
+    }
+  }
+
+  if (id == gfx::Display::kInvalidDisplayID)
+    id = synthesized_display_id++;
+  DisplayInfo display_info(
+      id, base::StringPrintf("Display-%d", static_cast<int>(id)), has_overscan);
+  display_info.set_device_scale_factor(device_scale_factor);
+  display_info.set_rotation(rotation);
+  display_info.set_configured_ui_scale(ui_scale);
+  display_info.SetBounds(bounds_in_native);
+  display_info.set_resolutions(resolutions);
+
+  // To test the overscan, it creates the default 5% overscan.
+  if (has_overscan) {
+    int width = bounds_in_native.width() / device_scale_factor / 40;
+    int height = bounds_in_native.height() / device_scale_factor / 40;
+    display_info.SetOverscanInsets(gfx::Insets(height, width, height, width));
+    display_info.UpdateDisplaySize();
+  }
+
+  DVLOG(1) << "DisplayInfoFromSpec info=" << display_info.ToString()
+           << ", spec=" << spec;
+  return display_info;
+}
+
+DisplayInfo::DisplayInfo()
+    : id_(gfx::Display::kInvalidDisplayID),
+      has_overscan_(false),
+      rotation_(gfx::Display::ROTATE_0),
+      touch_support_(gfx::Display::TOUCH_SUPPORT_UNKNOWN),
+      device_scale_factor_(1.0f),
+      overscan_insets_in_dip_(0, 0, 0, 0),
+      configured_ui_scale_(1.0f),
+      native_(false) {
+}
+
+DisplayInfo::DisplayInfo(int64 id,
+                         const std::string& name,
+                         bool has_overscan)
+    : id_(id),
+      name_(name),
+      has_overscan_(has_overscan),
+      rotation_(gfx::Display::ROTATE_0),
+      touch_support_(gfx::Display::TOUCH_SUPPORT_UNKNOWN),
+      device_scale_factor_(1.0f),
+      overscan_insets_in_dip_(0, 0, 0, 0),
+      configured_ui_scale_(1.0f),
+      native_(false) {
+}
+
+DisplayInfo::~DisplayInfo() {
+}
+
+void DisplayInfo::Copy(const DisplayInfo& native_info) {
+  DCHECK(id_ == native_info.id_);
+  name_ = native_info.name_;
+  has_overscan_ = native_info.has_overscan_;
+
+  DCHECK(!native_info.bounds_in_native_.IsEmpty());
+  bounds_in_native_ = native_info.bounds_in_native_;
+  size_in_pixel_ = native_info.size_in_pixel_;
+  device_scale_factor_ = native_info.device_scale_factor_;
+  resolutions_ = native_info.resolutions_;
+  touch_support_ = native_info.touch_support_;
+
+  // Copy overscan_insets_in_dip_ if it's not empty. This is for test
+  // cases which use "/o" annotation which sets the overscan inset
+  // to native, and that overscan has to be propagated. This does not
+  // happen on the real environment.
+  if (!native_info.overscan_insets_in_dip_.empty())
+    overscan_insets_in_dip_ = native_info.overscan_insets_in_dip_;
+
+  // Rotation_ and ui_scale_ are given by preference, or unit
+  // tests. Don't copy if this native_info came from
+  // DisplayChangeObserver.
+  if (!native_info.native()) {
+    rotation_ = native_info.rotation_;
+    configured_ui_scale_ = native_info.configured_ui_scale_;
+  }
+  // Don't copy insets as it may be given by preference.  |rotation_|
+  // is treated as a native so that it can be specified in
+  // |CreateFromSpec|.
+}
+
+void DisplayInfo::SetBounds(const gfx::Rect& new_bounds_in_native) {
+  bounds_in_native_ = new_bounds_in_native;
+  size_in_pixel_ = new_bounds_in_native.size();
+  UpdateDisplaySize();
+}
+
+float DisplayInfo::GetEffectiveUIScale() const {
+  if (device_scale_factor_ == 2.0f && configured_ui_scale_ == 2.0f)
+    return 1.0f;
+  return configured_ui_scale_;
+}
+
+void DisplayInfo::UpdateDisplaySize() {
+  size_in_pixel_ = bounds_in_native_.size();
+  if (!overscan_insets_in_dip_.empty()) {
+    gfx::Insets insets_in_pixel =
+        overscan_insets_in_dip_.Scale(device_scale_factor_);
+    size_in_pixel_.Enlarge(-insets_in_pixel.width(), -insets_in_pixel.height());
+  } else {
+    overscan_insets_in_dip_.Set(0, 0, 0, 0);
+  }
+
+  if (rotation_ == gfx::Display::ROTATE_90 ||
+      rotation_ == gfx::Display::ROTATE_270)
+    size_in_pixel_.SetSize(size_in_pixel_.height(), size_in_pixel_.width());
+  gfx::SizeF size_f(size_in_pixel_);
+  size_f.Scale(GetEffectiveUIScale());
+  size_in_pixel_ = gfx::ToFlooredSize(size_f);
+}
+
+void DisplayInfo::SetOverscanInsets(const gfx::Insets& insets_in_dip) {
+  overscan_insets_in_dip_ = insets_in_dip;
+}
+
+gfx::Insets DisplayInfo::GetOverscanInsetsInPixel() const {
+  return overscan_insets_in_dip_.Scale(device_scale_factor_);
+}
+
+std::string DisplayInfo::ToString() const {
+  int rotation_degree = static_cast<int>(rotation_) * 90;
+  return base::StringPrintf(
+      "DisplayInfo[%lld] native bounds=%s, size=%s, scale=%f, "
+      "overscan=%s, rotation=%d, ui-scale=%f, touchscreen=%s",
+      static_cast<long long int>(id_),
+      bounds_in_native_.ToString().c_str(),
+      size_in_pixel_.ToString().c_str(),
+      device_scale_factor_,
+      overscan_insets_in_dip_.ToString().c_str(),
+      rotation_degree,
+      configured_ui_scale_,
+      touch_support_ == gfx::Display::TOUCH_SUPPORT_AVAILABLE ? "yes" :
+      touch_support_ == gfx::Display::TOUCH_SUPPORT_UNAVAILABLE ? "no" :
+      "unknown");
+}
+
+std::string DisplayInfo::ToFullString() const {
+  std::string resolutions_str;
+  std::vector<Resolution>::const_iterator iter = resolutions_.begin();
+  for (; iter != resolutions_.end(); ++iter) {
+    if (!resolutions_str.empty())
+      resolutions_str += ",";
+    resolutions_str += iter->size.ToString();
+    if (iter->interlaced)
+      resolutions_str += "(i)";
+  }
+  return ToString() + ", resolutions=" + resolutions_str;
+}
+
+}  // namespace internal
+}  // namespace ash